Adhesive-applying mechanism



Jan. 1v, 1935. R. E. AcKLEY ADHESIVE APPLYING MECHANISM Filed Aug. 18,1932 3 Sheets-Sheet 1 wlw..

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Jan. 1, 1935. R. E. AcKLl-:Y

ADHESIVE APPLYING MECHANISM Filed Aug. 18, 1952 3 Sheets-Sheet 2 Jan. 1,1935.

R. E. ACKLEY ADHESIVE APPLYING MECHANISM Filed Aug. 18, 1932 3Shee'tS-Shee'b 5 NN @INN 1II my n m v 9N NM, @w um QN QW Q N% NN QN N%lN u: W5 mw ,mw QM Sw QN INMMWH lfHlIHl Ummm @1% m. w, Q J MJ W Sm Sm. M5

Patented Jen. 1, 1935 UNITED STATES ADHE SIV E -APPLYING MECHANISMRaymond E. Ackley, Chicago, Ill., assignor to R. B. Donnelley & SonsCompany, Chicago, Ill., a

corporation of Illinois Application August 18,

14 Claims.

My invention relates to mechanism for ap- Dlying an adhesive, such asglue, to objects as for example, and more particularly, wrapper-sheetsand books.

My invention as to one phase thereof relates to mechanism for applyingthe adhesive to the upper surface of the object to which the adhesive isto be applied, my object in this connection being to provide aconstruction of adhesive-applying mechanism operative to apply theadhesiveas stated, which will be of simple construction, operative toapply the adhesive in a highly satisfactory manner without leakage ofthe adhesive and without undue exposure of the adhesive to the dryingeffects of the atmosphere, and which may be readily maintained in cleancondition.

Another phase of my invention relates to the relationship of thebearings for the adhesivetransfer mechanism to the adhesive in the potthereof, my object in this connection being to provide a construction ofmechanism more particularly, though not exclusively,l for use 'inapplying the adhesive to the upper surface of the object, whereby thebearings referred to will be protected against contact by the adhesive.

Still another phase of the invention relates to the pot for holding theadhesive, it being my object in this connection to provide aconstruetion of pot which may be readily disassembled and cleansed andreadily reassembled.

Still another phase of the invention relates to the length of the lineof adhesive applied by the mechanism, my object in this connection beingto provide mechanism whereby lines of adhesive may be applied to theobject to reach short of both ends of the latter which is of particularadvantage in the case of the wrapping of books or other objects to avoidsqueezlng of the glue beyond the ends of the wrappers, and whereby linesof adhesive of different length may be applied in the proper position tothe objects regardless of the length of the objects to which theadhesive is to be applied and which is of particular advantage in amachine provided with means for advancing in succession to the adhesiveapplying mechanism sheets or other objects to which the adhesive is tobe applied.

While my invention is adapted for use in a-wide variety of machines, Ihave chosen to illustrate it in connection with a machine for wrappingbooks which are sufliciently flexible to be folded, the machine shownbeing of the same general construction as that disclosed in my pendingapplication for United States Letters Patent Serial No. 621,718, ledJuly 9, 1932, only such parts there- 1932, serial No. ceases v (ci.:a1-5o) illustrated.

Referring to the accompanying drawings:

Figure v1 is a plan view of a'portlon of the wrapping machine equippedwith my improvements.

IFigure 2 is a view in side elevation of the portion of the machineshown in Fig. 1.

Figure 3 is an enlarged section taken at the line 3 on Fig. '1 andviewed in the direction of the arrow.-

Figure 4 is'a face view of one of the adhesivetransfer wheels.

Figure 5 is a face view of the other of the adhesive-transfer wheels.

Figure 6 is a plan view of the adhesive-applying mechanism illustratingan adjustment of the transfer wheels relative to each other for varyingthe length of the line of adhesive applied thereto; and

Figure 7, a fragmentary plan view showing a modification of theadhesive-applying mechansm.

Referring to the particular machine illustrated, 10 represents anendless chain conveyor trained at its ends over sprockets, the sprocketat one end thereof being represented at 11,-the conveyor being shown asdriven by mechanism comprising `a main drive shaft 12 driven, throughspeed-reducing gear mechanism 13, by a motor represented at 14 andconnected with the mechanism 13 by a sprocket chain '15. The drive shaft12 is provided with a worm 16 meshing with a worm gear 17 on a verticalshaft 18, the shaft 18 being provided at its upper end with a helicalgear 19 meshing with a helical gear 20 rigid on a shaft 21 to v whichthe sprocket 11 is secured.

The conveyor chain 10 which operatesl to convey partially wrapped booksalong the machine for application of adhesive to the Wrappers and thesubsequent completion of the wrapper-folding operations, is providedwith means at spaced equal intervals therealong for gripping thepartially wrapped books fory the conveying thereof along the machine. Inthe'particular construction shown these means comprise clips 22 mountedon the conveyor chain 10 to be movable into and out of clamping positionand serving to clamp the wrapped portions of the booksat their forwardedges against the conveyor chain 10, the clips 22 defining the positionsassumed by these forward edges regardless of the length of the books'measured lengthwise of the'machlne.

It may here be stated that in the particular construction shown theconveyor 10 delivers the partially wrapped books to theadhesive-applying mechanism lin the condition shown, namely, with thebooks represented at 23 folded as shown and with the wrappersrepresented at 24, partially foldedfaround the books and presenting freeedges 25, which by a subsequent operation, .are to be folded over theother, folded, edges 25il of the wrappers and adhered thereto.

The adhesive-applying mechanism represented at 26 and constructed inaccordance with my invention comprises a frame structure 27 mounted toslide crosswise of the main frame of the machine on a pair of stationaryhorizontal rods 28 secured to the stationary main frame,I the framestructure 27 having threaded engagement at 29 with a threaded adjustingshaft 30 -rotatably mounted in a cross bar 31 secured to the outer endsof the rods 28 to adapt. the adhesive-applying mechanism to be adjustedtoward and away from the plane of the conveyor chain 10 to acthewrappers 24. n

The mechanism 26 also comprises a vertically disposed disk 32 shown asperipherally annularly grooved at 33 and located directly beneath theouter margin 25 of the wrapper to form a support therefor in theapplication of the adhesive to the upper surface ofthe wrapper.

'Ihe disk 32 is fixed on a sleeve 34 journaled in a bearing portion 35of the frame structure 27 and splined at 36 to ashaft 37 journaled `onthe commodate varying widths of the portions 25 of frame of the machineand driven from the shaft Y12 through the medium of a sprocket chain ,38trained about a sprocket 12a on the shaft 12 and a sprocket 39 on ashaft 40 connected with the shaft 37 through speed-reducing gearmechanism represented at 41.l l

The mechanism 26 further comprises a shaft 42 driven from the shaft 37by bevel gears 43 and 44 on the shafts 37 and 42, respectively, theshaft 42, which inclines upwardly in a direction away from the conveyorchain 10 at an angle of' 45 to the vertical, extending upwardly throughthe upwardly flaring side wall of a .pot 45 for holding the adhesive,such as for example glue,

to a position above the adhesive maintained inv the pot. n

It may be here stated that the pot 45 is shown as formed of a stationaryreceptacle section 46 shown as a part of the frame structure 27, and aremovable liner member 47 constituting a receptacle, fitting within thesection 46 and removable and replaceable therein, the section 46containing an opening 48 in its side Wall in which a flanged tubularmember 49 is secured in surrounding relationship to the shaft 42, ballbearings 50 and 51 being located between the member 49 and shaft 42,and" the liner member 47 having 'a tubular extension 52 surrounding thememberl 49, both .The mechanism 26 also comprisesan adhesive- -transferwheel 53 formed o f an upper cup-shaped portion 54 surrounding the upperend of the member 49 and the extension 52 and provided at its outerannular edge portion with an annular flange 55 which extends intothe'adhesive in the pot 45, the wheel 53 being secured at'the bottomportion`56 of its cup portion 54 to the upper end of the shaft 42 forrotation therewith. f y

The peripheral edge of the flange portion `55 of the'wheel 53 isannularly beveled at an angle of 45 to the face of the flange, asrepresented at.55, this beveled surface being preferably roughened, asfor example by knurling it..I i

Co-operating with the wheel v53 is a terminal transfer wheel 57 shown asin the form of a disk and'secured to the upper end of a shaft 58positioned to extend at a right angle to the shaftl 42 and journaled atbearings 59'and 60 in the frame structure 27, the shaft 58 having abevel gear 6l which is driven by a bevel gear 62 on -the shaft 42. Theperipheral edge of the wheel 57, is beveled as represented at 63, atanangle of 45 to the face of this wheel, at which beveled portion,preferably roughened as stated of the wheel 53, 'it opposes the beveledsurface 55a of the wheel 53, extending sufficiently close thereto toreceive adhesive carried up on the periphery of the wheel 53 in rotatingin the adhesive in the pot 45.

Thewheel 57 at its beveled portion'diametrical- 1y opposed to theportion thereof opposing the bevel surface of the wheel 53 extends intosuch a position, as shown, over the portion 25 of the wrapper'that, inthe movement of the wrapper by the conveyor 10 and in the rotation ofthe wheel 57, which rotates at its periphery at the same surface speedas the wrapper, the adhesive is transferredfrom the wheel 57 to thewrapper to form a line of adhesive thereon as represented at 64.

It is desirable in many cases, and particularly in the case of applyingadhesive to a wrapper, as in the construction illustrated, that theadhesive reach short of both the forward and rear ends ofthe object towhich the adhesive is to be applied, in the case of a wrapper to avoidthe squeezing of the adhesive beyond theV opposite ends of the wrapperin the subsequent applying of squeezing pressure to the wrapper, and toaccomplish this purpose the peripheral edge of the wheel 57 isappropriately recessed. In the particular coristruction shown,wherein'the circumference of -the wheel 57 is twice the length of thebookrthe periphery of the wheel 57 is provided with diametricallyopposed recesses, or cutouts, 65and 66, and the wheel 57 is so angularlypositioned about the axis of the shaft 58 that the adhesive will beapplied slightly to the rear of thev forward edge of each wrapper asindicated at 67 and reaches short of the opposite end of each wrapper asindicated at 68, assuming that a wrapper of a predetermined lengthmeasured lengthwise of the machine is being operated on as shown.

However, where the length of the line of adhesive is required to beshorter than the length of the peripheral portions of the wheel 57between the recesses 65 and 66, as for example where a wrapper ofshorter length than that shown is to 4be operated on and it is desiredthat the. lines of applied to the Wrappers the wheel 53 would beangularly adjusted so that the recesses 67 and 68,

shown as of the same length as the recesses 65 vand 66, would register,in the rotation of these wheels, with the recesses 66 and 65,respectively,

as will be manifest from Fig. 1. A line of adhesive of less lengththanthe maximum thus pro-` vided for and of a predetermined length withincertain limits may be applied by the wheel 57 by adjusting the wheel 53angularly so that only a portion of the beveled periphery of the wheel57 will receive adhesive. 'Thus in the angular adjustment of the wheel53 to the position shown in Fig. 6 adhesive will be applied tothe`periphery of the wheel 57 only between the points indicated at 69and 70 and between the points indicated at 71 and 72.

Referring to the modification of the construction shown in Fig. 7, thisconstruction is the same as that of the preceding figures except thatinstead of providing the cutouts or recesses in the wheels 53 and 57,the peripheries thereof are unbroken resulting in the continuoussupplying of adhesive from the periphery of the wheel 53 to theperiphery of the wheel 57 and thus the application of lines of adhesiveto the portions 25 of the wrappers throughout the length thereof areshown.

As will be understood from the foregoing the feature of providing thetransfer wheel 53 with the cup portion 54 extending upwardly therefromin the inclined position of `the wheel, is of advantage as it preventsaccess of the adhesive to the bearings for the shaft 42, andtheconstructing of the various parts of the adhesive-applying mechanismshown permits of .the ready disassembling of the parts as for examplefor cleansing and the ready re-assembling thereof.

Furthermore, the relative arrangement of the transfer wheels permits ofthe application of lines of glue to the objects as desired, withoutldanger'of leakage of the glue and by a simple construction and withoutsubjecting the film of glue to the atmosphere for an undue length oftime.

While the peripheral transfer portions of the terminal transfer wheelare so formed that unbroken lines of adhesive are applied to thewrappers, it will be understood that if ldesired such portions may be soformed as to cause thev line of adhesive to be formed of spaced apartbodies of the adhesive.

While I have illustrated and described certain particular constructionsof mechanism I do not wish to be understood as intending to limit myinvention thereto as the same may be variously modified and altered andthe invention embodied in other forms of structure without departingfrom the spirit of the invention.

What I claim as new, and desire to secure by Letters Patent, is:

1. Adhesive-applying mechanism comprising a source of adhesive-supply,adhesive-transfer wheels so disposed that the adhesive is transferred atthe peripheral portions of said wheels, the peripheral portions of saidwheels being recessed, said wheels being angularly relativelyadjustable.

2. Adhesive-applying mechanism comprising a source of adhesive-supply,adhesive-transfer wheels so disposed that the adhesive is transferred atthe peripheral portions of said wheels, the peripheral portions of saidWheels being recessed at different places around their circumferencessaid Wheels being angularly relatively adjustable.

3. Adhesive-applying mechanism comprising a source of adhesive-supply,adhesive-transfer wheels so disposed that the adhesive is transferred atthe peripheral portions of said wheels, the

peripheral portions of said wheels containing diametrically opposedrecesses, said wheels rbeing angularly relatively adjustable.

. 4. Adhesive-applying mechanism comprising a pot for the adhesive, a'rotatable shaft, and a transfer wheel secured to said shaft and having acentral cup portion and a peripheral ange portionv at the outer edge ofsaid cup portion and extending angularly into the adhesive in said pot,said shaft extending into said cup portion.

5. Adhesive-applying mechanism comprising ak pot fcr the adhesive, arotatable shaft, and a transfer wheel having a central cup portion andaperipheral flange portion at the outer edge of said cup portion andextending into .the adhesive in `said pot, said shaft extending intosaid cup portion and said cup portion being secured at its bottom walltosaid shaft.

6. Adhesive-applying mechanism comprising a pot for the adhesive,-arotatable shaft extending upwardly at an acute angle into said pot and atransfer wheel secured to said shaft and having a central cup portionand a peripheral flange portion at the outer edge of said cup portionand extending into the adhesive in said pot, the upper end of said shaftextending into said cup portion.

7. Adhesive-applying mechanism comprising a A pot for the adhesive, arotatable shaft extending at an acute angle into said pot, a tubularmember supply and a pair of adhesive-transfer wheelsI mounted on axesdisposed angularly relative to each other, the peripheries of saidwheels being beveled and in adhesive-transferring contact at a commonpoint in their circumferences, a portion of the periphery of one of saidwheels dipping into said adhesive supply, the other of said wheelsextending wholly above that portion of an object cn said support whichis to receive the adhesive, a portion of the periphery of said lastreferred to wheel extending in substantially parallel relation to saidpotrion of the object and in contact therewith. s

9. In combination, a support for an object to which adhesive is to beapplied, and adhesiveapplying mechanism comprising a source of a-dhesivesupply and a pair of adhesive-transfer wheels mounted on axes disposedsubstantially at a right angle, the peripheries of said wheels beingmitered and in adhesive-transferring contact at a common point in theircircumferences, a portion of the periphery of one of said wheels dippinginto said adhesive supply, the other of said wheels extending whollyabove that portion of an object vcn said support which is to receiveadhesive, a

portion of the periphery of said last referred to wheel extending insubstantially parallel relation to said portion of the object and incontact therewith.

. 10. Adhesive-applying mechanism comprising, in combination: a sourceof adhesive supply; a

plurality of. coacting elements to transfer adhesive having receivingand transferring surfaces coacting with each other throughoutpredetermined portions of their areas of variable extent; and means forrelative adjustment of said elements to vary the extent of said coactingareas.

11. Adhesive-applying mechanism comprising, incombination: conveyormeans including equidistantly spaced members for engaging and conveyingobjects to which adhesive is to be applied; a source of adhesive supply;a plurality of co-acting elements to transfer adhesive from said sourceto objects upon said conveyor,v two of said elements having receivingand transferring surfaces coacting with each other throughoutpredetermined portions of their areas of variable extent; and means forrelativeadjustment of said elements to vary the extent of said coactingareas.

12. Adhesive-applying mechanism comprising, in combination: a conveyormechanism including equidistantly spaced portions for engaging andconveying objects to which adhesive is to be applied; adhesive-applyingmechanism comprising a rotary adhesive-applying member mounted foredgewise contact with objects moving on said conveying mechanism; drivemeans for said mechanisms synchronized to cause a. plurality of objectsto be contacted by said rotary member at each revolution thereof; saidad- .hesive-applying mechanism also including adhesive transfer means totransfer adhesive to limited predetermined aros of the object-contactingedge of said member; and settable means to adjust the relative positionsof said member and means, to vary the lengths and/or positions of saidarcs. y

13. In a device of the class described, in oombination: a conveyormeans; members on said -conveyor for engaging and conveying each aseparate object to which adhesive is to beA applied; adhesive-applyingmechanism; said mechanism4 comprising adhesive-applying means operativeto apply to each of said objects a single line of adhesive of lesslength than that of the object, .and means to transfer adhesive 4to saidAapplying means; and means to adjust the relative positions of saidapplying and transfer means to vary the lengths of said applied lines ofad-' hesive.

14. In combination with conveyor means having portions equidistantlyspaced for engaging and conveying objects to which adhesive is to beapplied, of mechanism for applying a. line of adhesive to the objectscomprising a rotary element adapted to contact each of the objects andtransfer a line of adhesive thereto, means for feeding a line ofadhesive of predetermined length to said rotary element for transfer toeach of said objects, and means for relative adjustment of said rotaryelement and said transfer means whereby to predetermine the extent ofsaid transferred lines of adhesive.

RAYMOND E. ACKLEY.

